Punch



l* rotating the screw 7. A metal disk 8 is ro- Y 10, such as fiber, or the like.

'i ,muctqnmef January 1251929? sannio. 350,740.

'Y showing the v Umea f' PUN To @ZZ whomz't may concern?" -V Y y Beit known that I, THnoDonn J. FREUND,

a -ci-tizeen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Punches, of which the v following is a specification.

This invention relates to improvements in punches.

One of the objects of the invention is to cheapen and simplify the construction ofV punches. l l

Another object is to provide a block w1thin A,which a punch blade may readily be inserted and removed. Y .f v Another object is to provide a block in which aj plurality of such blades, of various sizes, may be inserted, to be used alterna-y tively or together. p

Another object is to vprovide a punch block having a blade in the form of a broken ring of steel, sharpened on one of its longitudinal edges and'possessing suiiicient resili. ence to retain itin placewithinthe block. Gther, further and more specific objects yof the invention will become readily apparent, to persons skilled in theart, from a Yconsideration of the following description when taken in conjunction with the drawings, whereinz- Figure 1 is aside elevationof a punchV press showingparts in sections and showing c my improved punch therein.

Fig. 2 is a plan view of the punch block puiiches'inserted in the respectivegrooves.V f Y ,i

VFig. 3 is a perspective view of one of the resilient broken rings forming ar punch, 'Y

adapted to be inserted in the block. i 1n all the views the saine reference characters are employed to indicate similar parts. is a punch press having *aV handle 6 for tatably secured on the end of the screw 7 as at 9, and securedto the underside of the disk 8 is a disk ofrelatively soft material Mounted on the base 11 of the punch press is a separable Vpunch block 12 having a series of concentric grooves 13, on one face, and a series vof intermediate grooves 14 on the Vother face. A punch blade 15 consists of a spring ring.l divided as at 16, and having a sharpened i edge 17. The blade 15 is insertible in oner of thel grooves, 13 or 14, on eitherV side of/i the punch block 12. Blades 15,of different.,

Y that the ends 16-16 pletiiig the ring and or CrriCAGQ'rILLINIS.

can;

be punched bythe respectivefbladles other blade 18, ofsnialler diameter, is shown in the block 12 in one ofthe grooves 13, so

that the-rnaterial between ltheblades 15 and I A18 will be in the shape of aring, or washer.

When the blade 18 is removed, the blade 15 will punch out a disk, but two blades, of different size maybe usedat the same time,l

as explained, so `that washers lmay bepunched.

The device is VVespecially adaptable for Y punching' disks, or rings from relatively soft material, suoli as felt, leather, or thelike. Whenthe blades are grooves, 13 or 14, the" exerting suiicient frick putin the respective j,

are 'of such length" will meet, thereby com- 1" ltional contact with the outer surfaceof the j groove to hold the ring in place.

-Y 1n the use of the device, the goods to be'. Y

punched are placed between the upper. surfaceof the blades 15`-18 Yand between the blades and the relatively upon the handle'`r is rotated which causes stanti'al contact with oi'I the ring 15, thus disk, or ring upon.

grooves adapted for blades,

154-18, of various diameters so that 4practically any diam@ The punch block i12 .shows nineseparatev" soft disk 10, where- Vthe screw 7 to move the disk 10 into sub- .asfl

eter of disk, or width of rings, may be punched within blades;

punch for each diameten of diskto be cut and by making the blades in theform of a broken ring, a blade may be produced from "the ultimate capacity of the By having the insertible blades the.A punch block,- considerable expense ,isv saved over the usual formlof having la separateV Having described my invention what I claim as new and desire to secure byLetters Patent,is:- Y

'1. A. punch block comprising a disk have ing a circulary groove in one of its faces and` v a blade comprising, a one piecefvsplitfthin ring, havingone of itsv longitudinal .edges sharpened, `and in frictional engagement u .7

with the inner surface which it is held in place.Y .l

of the groove by.,

. A punch block comprising a, disk ing lapluirality of grooves in one of its faces and blades -ifor insertion in the respective' grooves, each blade comprislng a one plece Ysplit ring held in the respective groove by 5 rctional engagement therewith.

3. A punch blockcomprising a disk hav- '.ing a plurality of grooves in each of its faces and a plurality of blades for 'insertion in the respective groovesyeach blade 10` comprising a strip of steel formed into Va Vonepiece brokenvor split ring, and having -one of its .longitudinal edges sharpened.

Vmeet When the ring is in contact with the outer annular vertical Wall of the groove and held in place by frictional engagement. Y,

'with said Wallof the groove.

In testimony whereof I scribe my name.

*THEODORE J. FREUND;

hereunto sub- 

